Vibration absorbing support



March 28, 1950 H. M. DoDGE 2,502,313

VIBRATION ABSORBING SUPPORT Filed March 25, 1945 ATTURN S maar.aan,unal' 4"*2,502,313

UNITED STATES PATENT OFFICE VIBRATION ABSORBING SUPPORT Howard M. Dodge.Wabash, Ind., assignor to The General Tire & Rubber Company, Akron,Ohio, a corporation of Ohio Application March 23, 1945, Serial No.584,409

l 6 Claims. (Cl. 248-358) 'This invention relates to a vibrationabsorbing provided with suitable bolt holes 2 for attachsupport forimpeding transmission of vibration ment to the supporting and supportedmembers. from a machine or instrument to its support, or Each of theattaching plates I has a central from the support to the instrument ormachine, circular opening and is provided with tongues the cushioningportion of the support being comor anges 3 that are struck up from thebody posed of rubber and so formed that it is yieldthereof at the marginof the central opening. able axially and also in directions transverseto The tongues or anges 3 are bent alternately its axis. upwardly anddownwardly with respect to the The invention has for an object toprovide a plate. "I'he attaching plates I are secured to support inwhich the rubber cushioning body is the opposite ends of a moldedtubular cushionso shaped that it has a high degree of resiliency ingbody 4 of rubber which has circular edge both axially and transverselyof its axis, so as to portions 5 at lts ends in which the anges 3 ofeiectively cushion vibratory impulses in any the supported plate areembedded, the iianges 3 direction, and which is adapted to provide aviforming a reinforcing ring in the tubular wall of bration absorbingsupport for either a superposed i5 the rubber cushioning body.orasuspended load. The tubular rubber body 4 has a thick wall A furtherobject of the invention is to provide center portion 6 of less diameterthan the end a support in which the rubber cushioning body portions 5and has Walls I which have interior and is eiectively reinforced by theattaching plates exterior faces of conical form and which gradusecuredto its ends. i ally decreases in thickness vfrom the center por- Afurther object it to provide a support suittion 6 tothe edge portions 5.able for use in supporting machines or instrusuperimposed loads put thecentral portion of ments which vary considerably in weight and therubber body under compression and, by reason which is an effective shockabsorber throughout of the fact that the central portion of the rubberarelatively large range of loads. body is of considerably smallerdiameter than With the above and other objects in view, the the endportions, the plates I and parts attached invention may be said tocomprise the support thereto may have relative lateral or tilting moveasillustrated in the accompanying drawings, ments with respect to oneanother, all of which hereinafter described and particularly set forthmovements are resiliently cushioned by the rubin the appended claims,together with such variaber body 4. If the load is suspended the conicaltions and modifications thereof as will be apparend walls are undertension and relative lateral ent to one skilled in the art to which theinvenand tilting movements as well as relative axial tion pertains.movements are cushioned.

Reference should be had to the accompanying In Fig. 3 of the drawings aslightly modied drawings forming a part of this specication, inconstruction is shown, in which the rubber body which 4a has a solidcentral portion 6a of reduced diam- Fig. 1 is a top plan view of thesupport embodyeter and tapering conical Wall portions 1a which ing theinvention;- correspond substantially to the tapering walls 1 Fig. 2 is asection taken on the line indicated in the modication first described.The cushionat 2-2 of Fig. 1; 40 ing action of the rubber member 4a issimilar to Fig- 3 iS a Section Similar t0 Fig- 2, ShOWing a that of thecushioning member 4 above described, Slightly modified COIlStluCiiOn;the solid center making the support somewhat Fg- 4 iS 2 00p Plan View 0faIlOiSller Support stiiler and increasing its load supporting capacity.embodying the invention; l In Figs. 4 to 7 of the drawings a furthermodi- Fig. 5 is a section taken on the line indicated "f5 iication ofthe invention is illustrated, in which at 5-5 in Fig. 4; the support isprovided with attaching plates II Fig. 6 is a fragmentary plan view ofthe supprovided with bolt holes I2, the plates II being porting plateemployed in the support shown in provided with a circular centralopening and a Figs.4and 5, and r continuous flange I3 around the marginof the Fig. 7 is a section taken on the line indicated 00 opening. Theflange I3 is of substantially cylinat 11 in Fig. 5. drical form and hasan inturned edge I4. Spaced Referring to the accompanying drawings, theopenings I5 are provided in the ange I3 and the support of the presentinvention is provided with ange I3 is embedded in a rubber cushioningbody attaching plates I at its opposite ends which may I6. Thecushioning body I6 is of conical form be identical in construction andwhich may be interiorly and exteriorly and is provided with an upturnededge portion I l at its large end in which the flange Il of theattaching plate Il is embedded. The small end of the cushioning memberIi is provided with a substantially cylindrical edge portion Il in whichis embedded a marginal flange I9 of an attaching disk Il.

The support is composed'of two frusto conical units, each composed ofthe attaching plate Il, the connecting disk 20 and the conical rubberbody I6. The marginal ange I9 of each con- 4 support, said plates havingopenings of greater diameter than said central portion and flanges atthe margins of the openings embedded in the end edgesy of said support.

4. A vibration absorbing support comprising a body yof rubber having arelatively stili central portion and annular resilient end portions ofsubstantially conical form and converging to` said central portion, andattaching plates secured to necting disk is provided with openings 2lfor anchoring the flanges I9 in the rubber body l0 and connecting disks20 are joined together centrally by means of a rivet 22.

In each of the modifications formed the rubber body may be molded andvulcanized upon ff the anged edges of the metal plates to embed y theflanges in the rubber.

It is to be understood that variations and modifications of the specificdevice herein shown and described for purposes of illustration. may bemade without departing from thespirit of the Y invention.

What I claim is:

1'. A vibration absorbing support having a cushioning body provided witha relatively stif! central portion and hollow flaring resilient rubberend portions of substantially conical form that converge to said centralportion, and an attaching plate at each end of said support, said plates-around the peripheries of said annular ends.

3. A vibration absorbing support having a relatively stii centralportion and hollow flaring 4 resilient rubber end portions ofsubstantially conical form that converge to said central portion, and anattaching plate at each end of said the annular end edges of saidsupport, each plate being perpendicular to the axis of the support andhaving an edge portion forming a flange projecting outwardly from theannular end to which 7the plate is attached.

5. A vibration absorbing support comprising a tubular body of resilientrubber having a portion of reduced external diameter and increased wallthickness midway between its ends, the ends of said tubular body iiaringfrom the portion of reduced diameter, and an annular attaching platesecured to said tubular body adjacent each end thereof, each attachingplate being of an external diameter greater than the end' of the tubularbody to which it is attached and projecting outwardly therefrom.

lf 6. A vibration absorbing support comprising f two vannular aringtubular resilient rubber units disposed small end to small end, anannular attaching plate at the large end of each of said units andlhaving a marginal portion attached to the large end of said unit, andtwo connecting disks secured together and each having a peripheralportion secured to the small ends of one of said units.

HOWARD M. DODGE.

REFERENCES CITED The following references are of record in the ille ofthis patent:

UNITED STATES PATENTS Number Name Date 1,477,331 Ely Dec. 11, 19231,892,065 Markey Dec. 27, 1932 1,948,476 Saurer Feb. 20, 1934 2,018,860Lord Oct. 29, 1935 2,132,840 Workman et al. Oct. 11, 1938

